What is a Yasso?

A Yasso is .......

a) A breed of mouse

b) Running 800 metres and then running 800 metres and then again and again ten times, all at the same pace. That time, being in minutes and seconds like 3 minutes 15 seconds, strangely this equates to what time your marathon will be, 3 hours 15 minutes. Or if your 800 metres is 3 minutes 30 seconds your marathon will be 3 hours 30 minutes.

c) An Italian Opera Singer

d) the answer is b)

Photo taken from Cute Overload which is a favorite site of Ihatetoast.